[Torchwatch]

As with all these things it depends on where you are going and who you expect to see you. Going to my local public pool 2 weeks ago it was lined black Speedos with 2" sides and yellow and white hip flashes. However in France in the summer on a quiet beach with dunes to hide among it was a tiny unlined bikini with one inch sides and a pouch front.
I may go back to the local pool next week but don't expect to get back to that part of Normandy for a few years. Don't go too extreme in front of people you will have to see again.

Never try to cut the lining out of suits, you will almost certainly nick the suit and spoil it, suits intended to be worn unlined are made slightly differently to lined suits, they never look quite right after snipping out the liner.